Whoever forges the signature of any judge, register, or other
officer of any court of the United States, or of any Territory
thereof, or forges or counterfeits the seal of any such court, or
knowingly concurs in using any such forged or counterfeit signature
or seal, for the purpose of authenticating any proceeding or
document, or tenders in evidence any such proceeding or document
with a false or counterfeit signature of any such judge, register,
or other officer, or a false or counterfeit seal of the court,
subscribed or attached thereto, knowing such signature or seal to
be false or counterfeit, shall be fined under this title or
imprisoned not more than five years, or both.